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Organic light-emitting display device and method of manufacturing the same

a technology of light-emitting display device and organic light-emitting device, which is applied in the direction of solid-state device, electric lighting source, electric light source, etc., can solve the problems of reducing the life degrading of organic light-emitting devi

Active Publication Date: 2015-05-19
SAMSUNG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The solution effectively prevents damage to the organic light-emitting devices by sealing them with a robust encapsulation unit that covers cracks and protects against moisture, oxygen, and light, thereby extending the device's lifespan and reducing the occurrence of dark spots.

Problems solved by technology

When the organic light-emitting device, which is highly vulnerable to moisture, oxygen and light, contacts moisture, oxygen or light, the organic light-emitting device may be degraded.
Also, when oxygen or moisture is diffused into the emission layer including the organic material, charges migrate during an electrochemical reaction at an interface between the pixel electrode or the counter electrode and the emission layer including the organic material so as to produce an oxide, and the oxide separates the emission layer including the organic material from the pixel electrode or the counter electrode so as to generate dark spots or the like, thereby reducing the life of the organic light-emitting device.

Method used

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  • Organic light-emitting display device and method of manufacturing the same
  • Organic light-emitting display device and method of manufacturing the same
  • Organic light-emitting display device and method of manufacturing the same

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Embodiment Construction

[0042]The present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown.

[0043]FIG. 1 is a cross-sectional view illustrating an organic light-emitting display device according to an embodiment of the present invention; FIG. 2 is a cross-sectional view illustrating an organic light-emitting device EL of the organic light-emitting display device of FIG. 1; and FIG. 3 is an enlarged cross-sectional view illustrating a portion A of FIG. 2.

[0044]Referring to FIGS. 1 and 2, the organic light-emitting display device 100 includes a substrate 101, an organic light-emitting unit 102, and an encapsulation unit 120.

[0045]The organic light-emitting unit 102 including the organic light-emitting device EL is disposed on the substrate 101. The substrate 101 may be a substrate formed of glass material, a substrate formed of plastic material such as polyimide or acryl, or a substrate formed of metal. The substr...

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PUM

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Abstract

In an organic light-emitting display device and a method of manufacturing the same, the organic light-emitting display device includes: a substrate; an organic light-emitting unit that includes a plurality of organic light-emitting devices formed on the substrate; and an encapsulation unit that seals the organic light-emitting unit. The encapsulation unit includes: a barrier layer and a planarization layer that are stacked on the organic light-emitting unit; and a cover layer that is disposed between the barrier layer and the planarization layer to cover a crack occurring in each of the organic light-emitting devices.

Description

CLAIM OF PRIORITY[0001]This application makes reference to, incorporates the same herein, and claims all benefits accruing under 35 U.S.C. §119 from an application earlier filed in the Korean Intellectual Property Office on 16 Jan. 2012 and there duly assigned Ser. No. 10-2012-0004913.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to an organic light-emitting display device and a method of manufacturing the same.[0004]2. Description of the Related Art[0005]Organic light-emitting display devices using an organic light-emitting device may provide a moving image such as a video because they have a faster response time than liquid crystal display (LCD) devices that are currently widely used, and they may have a wide viewing angle and a high brightness because they emit light by themselves. Accordingly, organic light-emitting display devices are spotlighted as the next-generation display devices.[0006]An organic light-emitting device include...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): H01L33/00H01L51/52
CPCH01L51/5253H10K59/873H05B33/04H10K50/844
Inventor KANG, TAE-WOOKCHOI, YOUNG-SEO
Owner SAMSUNG DISPLAY CO LTD